Key points of smelting process,such as decarburization and Cr yield,thermal compensation,bottom blowing patterns,as well as high-efficiency desulphurization are discussed in the paper.

The dechroming mechanism of organic acid from chrome shavings was studied from the following aspects,the depolymerization of complex compound,the replacement of H+ and the replacement of organic acid radical anion.

The oxidation dechroming using hydrogen peroxide was comprehensively studied.

The effect of dechroming temperature, the offer of phosphoric acid and the reaction time on the amount of dechroming and collagen hydrolysis were studied.

Aiming at the tristep method smelting process of stainless steel "electrical arc furnace+multifunction converter+VOD", and centering about dephosphorization, the theoretical analysis of the feasibility of related important link in process chain for dephosphorization and chromium conservation in the earlier stage of converter process was carried out based on metallurgical thermodynamics.

Research progress in treatment of high phosphorus iron ore and dephosphorization of high phosphorus hot metal;

Study on molten steel dephosphorization by effect of synthetic refining slags;

Process control of dephosphorization in initial smelting period of combined blowing BOF for clean steel;

The products of baotou minerals calcined by CaO leached in HCl-H3cit solution,and the relationship among the ratio of phosphorus removal,HCl acid concentration,H3cit concentration,temperature,liquid to solid,time and stirring rate was studied by the quadratic regression orthogonal analysis,and then the r.

General rules of phosphorus removal with converter slime from simulated phosphorus wastewater are investigated.

The design and implementation of a phosphorus removal fuzzy controller with fuzzy learning mechanism are discussed.